If you go through the above notes thoroughly what the OOTB implementation says is :
The affected CIs means the - cmdb_ci records which are being affected by the change. (Eg: Servers /Jobs etc.,)
Once they are populated as given in the notes one need to click on "Refresh Impacted services" form context menu. So that the Impacted Services/CIs will be fetched OOTB (I expect).
The Impacted Services/CIs means -
The Impacted Services/CIs related list represents a many-to-many relationship between the Task [task] and CMDB [cmdb_ci] tables. The related list displays CIs, such as business services or other CI classes, that are impacted.
(I suspect these are the extensions of the Classes OR the services/CIs that having the relationship with the affected CIs in one scence.)
Please mark my reply as Correct Answer or Helpful or Like it based on how it worked out for you.
Regards,
Saikiran Guduri.
